From the back: I could hardly wait to crawl under the covers, and snapped off the lamp on my desk. The moon hung over Bergen Peak. I got in bed and watched it through the window, letting my eyes close ...when I saw the Hand again! He climbed on my desk and turned the lamp back on.

I sat up and watched him drape himself over the edge of the table. He reached for the knob of the drawer, yanked it open and fell inside. After mucking around in there he found paper and a pencil, got up on the table, and started writing.

Definitely not a dream. I got out of bed, went over to the table, and watched as he wrote backwards. I translated the turned-around letters into words as soon as they spilled onto the page. "My young Master, the time has come for us to converse. As I have the wit to understand your speech, so are you able to read my written replies. Shall we begin?"

"Begin what?"

"Your instruction, young Leonardo. I have waited patiently through the centuries for your return."